1paulg

have seen clear fibreglass bottles which are great as you can see the level ..plus they are much lighter...however they havent been registered in this country by the overseas manufacturer

Dr Watson... the value for customs is determined by depreciation on the purchase price at the time of entry into the country ..so if you took 10y to get here it would be a fraction of the price you paid... that is why some people keep their boat registered off shore for a while when bringing it back ...as the depreciation will be determined at the point you pay duty which could be a year or more later (if you make a few offshore trips meantime)